HSTS Not Set


The application does not use an HTTP Strict Transport Security (HSTS) policy. HSTS is a standard defined in RFC 6797 and set through an HTTP header that allows web sites to require the browser to use a secure channel for all communication with the web server. Even though an application is using HTTPS, the lack of the HSTS header means that sensitive data could be leaked over an insecure channel and captured by attackers. 

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